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    <head>
      <base href="https://bugs.llvm.org/">
    </head>
    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [AMDGPU] crash or select error in shader generated by radeonsi"
   href="https://bugs.llvm.org/show_bug.cgi?id=39214">39214</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[AMDGPU] crash or select error in shader generated by radeonsi
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>libraries
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>7.0
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>PC
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Linux
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>P
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>Backend: AMDGPU
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>unassignedbugs@nondot.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>joseph.kucia@gmail.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvm-bugs@lists.llvm.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=20976" name="attach_20976" title="bitcode">attachment 20976</a> <a href="attachment.cgi?id=20976&action=edit" title="bitcode">[details]</a></span>
bitcode

The attached LLVM bitcode is prodcued by radeonsi.


LLVM 7.0.0:

--- snip ---
LLVM ERROR: Cannot select: 0x55bf333f40c0: v4i32,ch = load<(dereferenceable
invariant load 16 from %ir.25, addrspace 2)> 0x55bf33367b28, 0x55bf333f9438,
undef:i32
  0x55bf333f9438: i32 = add 0x55bf333f94a0, Constant:i32<272>
    0x55bf333f94a0: i32,ch = CopyFromReg 0x55bf33367b28, Register:i32 %42
      0x55bf333f98b0: i32 = Register %42
    0x55bf333f9710: i32 = Constant<272>
  0x55bf333f4128: i32 = undef
In function: main
--- snip ---

LLVM 6.0.1:

--- snip ---
#0 0x00007fd358284daa llvm::sys::PrintStackTrace(llvm::raw_ostream&)
(/usr/lib64/llvm/6/bin/../lib64/libLLVMSupport.so.6+0x108daa)
#1 0x00007fd358282c96 llvm::sys::RunSignalHandlers()
(/usr/lib64/llvm/6/bin/../lib64/libLLVMSupport.so.6+0x106c96)
#2 0x00007fd358282f1b
(/usr/lib64/llvm/6/bin/../lib64/libLLVMSupport.so.6+0x106f1b)
#3 0x00007fd35717cfe0 (/lib64/libc.so.6+0x35fe0)
#4 0x00007fd359ca34e1
(/usr/lib64/llvm/6/bin/../lib64/libLLVMCodeGen.so.6+0x2fb4e1)
Stack dump:
0.      Program arguments: /usr/lib/llvm/6/bin/llc llvm-code.bc 
1.      Running pass 'CallGraph Pass Manager' on module 'llvm-code.bc'.
2.      Running pass 'Simple Register Coalescing' on function '@main'
Segmentation fault
--- snip ---</pre>
        </div>
      </p>


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